After the fall: a prior grace that determines the will
Thesis III. Once a person has fallen into sin, these doctors hold, he cannot turn to God, nor, once converted, set himself to any good work, without some prior aid of grace. This aid does not merely invite and urge him toward the good, or assist him while he does a good work; it bends and determines his will toward the good and effectively produces in it a good act of willing.
They say the weakness of the will demands this. Corrupt concupiscence, clinging to a person after sin, keeps dragging the will down toward earthly things by its constant weight, so that for every single impulse of heavenly love it must be lifted upward by God's actual and efficacious help.
Latin
III. Ex quo vero homo in peccatum lapsus est, juxta doctorum istorum sententiam, fieri non potest ut ad Deum se convertat, aut jam conversus ad bonum aliquod opus se moveat, sine praevio quodam gratiae auxilio, quo non simpliciter ad bonum invitetur & sollicitetur, aut etiam in bono opere adjuvetur, sed quo voluntas ejus ad bonum flectatur atque determinetur, & bonus volendi actus efficaciter in ea producatur. Id enim exigere voluntatis infirmitatem, quam prava concupiscentia in homine post peccatum inhaerens, continuo pondere ad terrena incurvat, & quae propterea ad singulos dilectionis coelestis impetus, actuali & efficaci Dei auxilio sursum erigi opus habet.